Gas-stove.



w. N. BEST.

GAS STOVE.

APPLICATION FILED FEB. I, 1915- Patented June 1, 1915.

WILLIAM N. BESI, .OF NEW YORK, N. Y.

GAS-STOVE.

Specific ation of Letters Patent.

Patented June 1, 1915.

Application filed February 1, 1915. Serial No.5,395.

To all whom, it may concern:

Be it known that I, WILLIAM N. BEST, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Gas-Stoves, ofwhich the fol-- lowing is a specification.

This invention relates to certain improvements in gas stoves and more particularly to a type adapted for use in heating the air of either living rooms or drying rooms.

More particularly, my invention involves certain improvements in the type of construction shown in my prior Patent No. 1,042,872, issued October 29, 1914.

The main object of my present invention is to more effectively insure the complete combustion of the fuel and therefore a more economical utilization of said fuel. Furthermore, by absorbing a large portion of the heat of combustion in the refractory walls adjacent to the burner, this heat is permitted to be radiated to the atmosphere and a more uniform heating action is secured.

Reference is to be had to the accompanying drawings forming a part of this application and in which similarreference characters indicate corresponding parts.-

In these drawings, Figure 1 is a side elevation of a stove constructed in accordance with my invention Fig. 2 is a top plan view thereof; Fig. 3 is a central vertical section; Fig. 4 is an inverted transverse section on the line 4=4 of Fig. 3, and Fig. 5 is a plan view of the bottom wall or support for the refractory material. I

In the specific construction illustrated and which constitutes only one embodiment of my invention, I employ a sheet metal casing including a peripheral wall 10, a top wall 11 and a bottom wall 12. The casing has its axisvertical and the bottom wall 12 is supported at some little distance above the fioor. connected thereto a plurality of legs 13 so that air may circulate in the space beneath the bottom 12 and the direct radiation of heat to the floor is prevented.

Within the casing, I employ two concentric cylindrical blocks or walls 14 and 15 of any suitable refractory material, such for instance as fire brick. The outer block or outer refractory wall 14 is disposed closely adjacent to and concentric with the outer pe- As. shown, the bottom wall 12'has1 inner refractory wall 15 is spaced from the outer wall 14 so as to leave an annular combustion chamber 16 extending vertically. I have illustrated the inner block 15 in the form of an annular wall but it is not essential that this have a central passage as it may, if desired, be a solid cylindrical block. It is preferably made as illustrated to reduce to a minimum the weight and to avoid' the use of superfluous material. The outer wall is of course held in place by its engagement with the casing, while the inner wall may be held in position in various ways. As shown, the bottom 12 has a central aperture 17 with an annularupturned flange 18 adapted to fit within the central passage'lQ of the block 15. This holds the block concentric with the outer wall. To prevent it from rotating, the lower end may be provided with two radial grooves shown in dotted lines in Fig. 3 and adapted to receive upturned flanges or lugs 20 on the bottom wall 12.

The outer wall 1-1 is preferably somewhat higher than the inner wall and the latter supports a transverse wall 21 also formed of refractory material. ameter substantially equal to the interior diameter of the casing and may have a depending center portion so as to rest upon both of the annular refractory walls. This may be held against rotation and lil ewise hold the center wall 15 by having radial grooves 22 in its under side receiving annular ridges 23 at the upper end of the inner wall 15. The parts may all be held together by rods 24 extending vertically and each having its opposite heads engaging with the upper surface of the top wall and the lower face of the wall 14 as shown in Fig. 4 and may extend through similar grooves in the edges of the transverse wall 21. These rods will also tend to prevent any rotation of the refractorv walls 14: and 21 in. respect to the casing. The top wall 21 may also be held against rotation by a bail 25 the opposite ends of which may project through the casing in sockets at diametrically opposite points in the transverse wall 21. It is, of course, evident that any other suitable handle may be used if desired.

Within the annular chamber 16 and closely adjacent to the lower end thereof, I provide an annular burner 26 which may be connectecl to a. gas supply pipe 27 extending horizontally thereto. The burner may have a pluralitv of apertures or jets disposed close together along the upper side so as-to deliver a substantially continuous flame or row of flames around the annular chamber. For admitting air to the burner I preferably provide a series of air inlet ports 28 extending through the outer casing 10 and through the outer refractory wall 14:. In addition to these, there may be, if desired, a series of smaller openings through the bottom wall 12. directly beneath the burner,

although these are not essential and in fact I prefer to utilize merely the horizontally disposed inlet passages 28 as shown. For permitting the escape of gases of combustion, I provide a series of gas outlet ports 29 extending through the casing 10 and they outer refractory wall 14 closely adjacent to and directly beneath the transverse wall 21. I may, in addition, provide a series of openings 30 through the transverse wall 21 and leading to an air chamber 31 between the transverse wall 21 and. the top wall 11.

Gas may escape from this chamber through Having thus described my invention, what I claim as new and desire to ters Patent is:

1. A gas stove including a sheet metal casing, separate inner and outer concentric refractory walls spaced apart to leave an annular combustion chamber, an annular burner within said chamber, and a refractory top wall for'said' annular chamber, said outer wall having a series of radially extending air inlet openings adjacent the lower end thereof, and a'series of radially extending gas outlet openings adjacent the upper end thereof.

-2. A gas stove including a sheet metal casing, separate inner and outer concentric refractory walls spaced apart to leavean annular combustion chamber, an annular secure by Letburner within said chamber, and a separate refractory top wall for said annular chamoutlet at the upper end, a transverse wall of refractory material within said casing and beneath said top wall, and a bail haying the opposite ends thereof projecting through said casing and into said transverse wall to relieve the bottom of the weight of said top .wall when said stove is lifted by said bail.

4. A gas stove including three blocks of 'refractory material, two of saidblocks forming separate inner and outer concentric walls spaced apart to leave an annular combustion chamber, the upper edge of said outer wall being higher than said inner wall and the other of said blocks forming a top wall having a depending central portion engaging with said inner wall and a peripheral portion engaging with said outer wall, an annular burner within said annular chamber at the lower end thereof, and separate annular series of openings communicating with said chamber, one of said series being at the lower end and serving as air inlets and the other of said series being at the upper end and serving as gas outlets.

5. A gas stoveincluding three blocks of refractory material, two of said blocks forming separate inner and outer concentric walls spaced apart to leave an annular combustion chamber having an air inlet at the lower end and an outlet at the upper end, and the other of said blocks forming a top wall having a peripheral portion engaging with said outer wall and having a central portion engaging with said inner wall, an annular burner within said annular chamber at the lower end thereof and adjacent to said inlet, and means for holdin said blocks together in the specified relationship. I p

Signed at New York city in the county of New York, and State of New York this 29th day of January, A. D. 1915.

v WILLIAM N. BEST. Witnesses:

CLAIR W. FAIRBANK, FLORENCE LEVIEN. 

